Machine for treating paper-stock.



W5. .In HERRBQLD L C. KEELAN. `MACHINE 'Fammi/ums; PAPER 5100K.

Patented Ma1325,

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'Wi/thme@ l. Hmm# 45 the left of Fig. II.

UNTTED STATES PATENT FFTQF.

WILLIAM J. HERRBOLD AND CHARLES KEELAN. F KALAMAZOO. MICHIGAN.

MACHINE FOR TIREATING PAPEL-STOCK.

Application filed November 23. 1918.

To all whom t may concern 'Be 1t known that we, 'ILLIAM J. HERR- `BOLDand CHAnLi-:s KBELAN, citizens ot' the United States, residing atKalamazoo, county of Kalamazoo, State of Michigan. have invented certainnew and useful Improvements in Machines :t'or Treating Paper-Stock, ofwhich the following is a specication.

This invention relates to improvements in machines for treating paperstock.

The main objects of this invention are:

First, to provide an improved machine for washing paper stock whereby alarge proportion of the liquor. for example, deinking liquor, with whichthe stock has been previouslyY treated may be saved or rec0vered.

Second, to provide an improved machine for washing paper stock which mayalso be effectively used for bleaching'.

Third, to provide an improved machine for washing paper stock which isvery etlective and of large capacity.

-Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

We accomplish the objects of our invention-by the devices and meansdescribed in the following specification'. The invention is clearlydened and pointed out in the claims.

A structure which is a preferred embodiment of our invention. is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, in which:

Figure I is a detail side elevation ot' a structure embodying thefeatures of our invention, various parts thereof being shown mainly inconventional form.

Fig. II is an end elevation looking from the left of Fig. I.

Fig. III is a detail side elevation of the Washing tank and the screendriving mechanism for the rotary screens looking from Fig. IV is adetail plan view of the washing tank.

Fig. V is a detail plan view of the inlet endo'f the washing tank.

F ig. VI is a detail view partially 1n transverse section on a .finecorresponding to line 6-6 of Fi I.

Fig. VI? is an enlarged detail of a portion of the parts shown in Fig.VI.

Specification of Letters Patent.

Patented Mar. 25, 1919 Sera1No.263.811.

Fig. VIII is a detail section on aline corresponding to line 8-8 of Fig.III.

Fig. IX is a plan view of the washing tank with the rotary screensomitted illustrating the arrangement of the spray pipe 1n the bottomthereof.

In the drawing. similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to the drawing, l represents one floor ot' a building and Q afloor above. The washing tank 3 is arranged on the upper Hoor and isprovided with an inlet f1 at one end and a discharge conduit 5 at theother. The tank is provided with an overflow connection at 6 to thisconduit and also a gate connection 7.

On the lower floor we arrange a stock tank 8 to which the conduit 5delivers. This stock tank is provided with agitators 9 mounted on ashaft 10 driven by suitable means, as the gears 11. The drivingconnections are not illustrated as they form no part of this invention.

The circulating pump 12, shown conventionally in Fig. I, is connected tothe stock tank by a pipe 13. The discharge pipe 14 of the pump 12 isconnected to the inlet 4 of the washing tank so that the stock may becirculated through the washing tank and stock tank. The pipe 13 isprovided with a valve 15 so that the stock may be retained in the. stocktank. The discharge pipe 1l is provided with a delivery connection 1Gcontrolled by the valve 17 so that when the treatment oi' the stock iscompleted it may be delivered to the supply tank.

The inlet pipe 4 is connected by a pipe 18, controlled by a valve 19, tothe source of supply of the stock, such as a de-ibering or de-inkingmachine or otherwise, as may be desired. lVhen the stock is beingcirculated through the pump 12 to the washer and the stock tank S thisvalve 19 is closed. b

The pipe 13 preferably has a connection Q0 with a water supply, such awater main, this connection being controlled by a valve 21.

lVithin the washing tank we provide a plurality of rotary screens 22having buckets 23 therein delivering through the tubular journals 24 tothe waste pipe 25, each screen being provided with a connecting pipe 26to this waste pipe. The structural detalls of the rotary. lscreens arenot a part of our present invention and are, therefore,

not described with further detail.

The screensv areprovided with gears 27 meshing wlth pinions 28 drivenfrom the pulleys 29 and belts 30 and 31 and 31-see Figs. III and VI, sothat the screens are,

by the valve 37.

With this arrangement of parts the apparatus may be operated-as follows:Assuming that it is desired to wash stock that has been treated withde-inking or other liquor which it is desired to recover, the stock isdelivered to the washing tank from the source ot' supply to the valve19. The valve 15 being closed the stock will be collected in the stocktank 8 and the liquor drawn off -by means of the screens through thewaste pipe 32 to the liquor tank, the valve 24 being open and the valve35 being closed. When a batch has been run into the stock tank 8 thevalves '19 and 34 are closed, the valve 35 to the drain or sewer opened,the valves 15, 20 and 37 opened a-nd the pump started, the Valve .17being closed, and the stock is circulated with the washing water throughthe washing tank, the dirty water being screened oii When the washing iscomplet-ed a bleach may be added, the gate 7 opened,a.nd the stock withthe bleach circulated through the stocktank with the agitator andthrough the pump until it is properly bleached. The. bleach may be thenwashed out and the stock dise charged through the connection 16. Byproper manipulation about of tlie stock treating liquors mav berecovered. The apparatus is very eiicient and of large capacity.

,IVe have illustrated and described our improvements mainly invconventional form and without an attempt to maintain the relativeproportion ot parts. It is believed that the disclosure made willenablethose skilled in the art to which our invent-ion relates toembodiv or adapt the same as particular installations and capacitydesired may require for most eiiicient results.

Having thus described ourinvention. what we claim as new and desire tosecure by Letters Patent, is: A

1. In a machine for treating paper stock,

ternal buckets, a spray pipe disposed in said thecombination of awashinggtank provided with a stock inlet at one end and a discharge.conduit at the other, said tank having an overflow connection and agate connection said washing tank and'- provided with inap.

washing'tankbelow said screens to agitate the stock therein and supplywater thereto, aV waste pipe l"to which `said buckets deliver, valvesfor controlling said waste pipe whereby the waste maybe conducted to areceptacle for the purpose of saving liquor or toa drain when washingstock, and a circulating pump having an inlet pipe connected to saidstock tank and a discharge pipe connected to the stock inlet of saidwashing tank, said' pump inlet pipe being provided with a valve and witha waterv supply connection, 'the pump discharge pipe being provided witha 4 stock delivery connection. .I

2. In a machine for treating /paper stock, the combination of a washingtank'provided with a stock inlet at'one endand a discharge conduit atthe other, a` stock tank to which said conduit delivers, a lseries ofrotary. screens disposed'in said washing tank ,and provided withinternal buckets, a sprayl pipe' disposed in said washing tank belowsaidl screens to a'gitate the stock therein and supv ply water thereto,a waste pipe to Whichsaid `buckets deliver, valves for controlling saidwaste pipe` whereby the waste may be conducted to a receptacle for thepurpose `of saving liquor or to a drain whenwashing stock, and acircula-.ting pump having an vinlet pipe connected to said vstock tank`and a discharge pipe connected to the 'stockiiilxet of said washingtank, said pump inlet ,pipe being provided with a valv 3. In a-machinefor treatingpaperstoek, the combination of a washing tank provided 4witha stock inlet at one end and a discharge conduit at the other, said tankhaving an overiow connection and a gate connection to said dischargeconduit, a stock tank to which said conduit delivers disposed below saidwashing tank, an agitator for' said stock tank, a rotary screen disposedin said washing tank, a waste pipe to which said screen delivers, valvesfor controlling said waste pipe whereby the waste may be conducted to areceptacle for the purpose of saving liquor or to a drain when washingstock, and a circulating pump having an inlet pipe connected to saidstock tank and a discharge pipe connected to the stock inlet `of saidwashing tank,` said pump inlet pipe being iso.

4. In a machine for treating paper stock, the combination of la washingtank provided with a stock inlet at one end and a discharge conduitat'the other, a stock tank to which said condui-t delivers, a rotaryscreen disposed in said washing tank, a waste pipe to which said screendelivers, valves forcontrolling said waste pipe whereby the waste may beconducted to a` receptacle for the purpose of saving liquoror to a drainwhen washing stock, and a circulating pump having an inlet-pipeconnected to said stock tank and a discharge pipe connected to the stockinlet of said washing tank, 4said pump inlet ipe being provided with avalve.

5. Iii a machine for treating paper stock, the combination of a washingtank provided `with a stock inlet at one end and a discharge conduit atthe other, said tank having an overflow connection and a gate connectionto said discharge conduit, a stock tank to which said conduit deliversdisposed below said washing tank, an agitator for said stock tank, aseries of rotary screens disposed 1n said washing tank and provided withinternal buckets, av spray pipe disposed in the bottom of said washingtank below said screens to agitate the stock therein and supyply waterthereto, a waste' pipe to which discharge connected to the stock inletof said washing tank. v 7.. In a machine' for treating paper stock,

, the combination of a washing tank provided with a stock inlet at oneend and a discharge conduit at the other, said tank having an overflowconnection and a gate connection to said discharge conduit, a stock tankto which said conduit delivers, an agitator for Said stock tank, ascreen for said washing tank, a waste pipe to which said screendelivers, valves for controlling said waste pipe whereby the waste maybe conduct-ed to a receptacle for the purpose of saving liquor or to adrain when washin stock, and a circulating pump having its lnletconnected 'to said stock tank and its dischar e connected to the stockinlet of said was ing tank, the pump inlet being provided with a valve.

8. In a machine for treating paper stock, the combination of a washingtank provided with a stock inlet at one end and a discharge conduit atthe other, a stock tank to which said conduit delivers, a screen forsaid washing tank, a waste pipe to which said screen delivers, valvesfor controllin said waste pipe whereby the waste may e conducted to areceptacle for the purpose of saving liquor or to a drain when washingstock,

and a circulating pump having its inlet con-l nected to said stock tankand its discharge connected to the stock inlet of said washing tank, thepump inlet beiner provided with a valve.

In witness whereof, we havehereunto set our'hands and seals in thepresence of two witnesses.

lWILLIAM J. HERRBOLD. [L. s] CHARLES KEELAN. [1.. 8.] Witnesses V. K.WERSEL, W. C. FIsK.l

